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use iced::alignment;
use iced::executor;
use iced::subscription;
use iced::widget::{button, checkbox, container, text, Column};
use iced::window;
use iced::Event;
use iced::{
Alignment, Application, Command, Element, Length, Settings, Subscription,
Theme,
};
pub fn main() -> iced::Result {
Events::run(Settings {
exit_on_close_request: false,
..Settings::default()
})
}
#[derive(Debug, Default)]
struct Events {
last: Vec<Event>,
enabled: bool,
}
#[derive(Debug, Clone)]
enum Message {
EventOccurred(Event),
Toggled(bool),
Exit(window::Id),
}
impl Application for Events {
type Message = Message;
type Theme = Theme;
type Executor = executor::Default;
type Flags = ();
fn new(_flags: ()) -> (Events, Command<Message>) {
(Events::default(), Command::none())
}
fn title(&self) -> String {
String::from("Events - Iced")
}
fn update(&mut self, message: Message) -> Command<Message> {
match message {
Message::EventOccurred(event) if self.enabled => {
self.last.push(event);
if self.last.len() > 5 {
let _ = self.last.remove(0);
}
Command::none()
}
Message::EventOccurred(event) => {
if let Event::Window(id, window::Event::CloseRequested) = event {
window::close(id)
} else {
Command::none()
}
}
Message::Toggled(enabled) => {
self.enabled = enabled;
Command::none()
}
Message::Exit(id) => window::close(id),
}
}
fn subscription(&self) -> Subscription<Message> {
subscription::events().map(Message::EventOccurred)
}
fn view(&self) -> Element<Message> {
let events = Column::with_children(
self.last
.iter()
.map(|event| text(format!("{event:?}")).size(40))
.map(Element::from)
.collect(),
);
let toggle = checkbox(
"Listen to runtime events",
self.enabled,
Message::Toggled,
);
let exit = button(
text("Exit")
.width(Length::Fill)
.horizontal_alignment(alignment::Horizontal::Center),
)
.width(100)
.padding(10)
.on_press(Message::Exit);
let content = Column::new()
.align_items(Alignment::Center)
.spacing(20)
.push(events)
.push(toggle)
.push(exit);
container(content)
.width(Length::Fill)
.height(Length::Fill)
.center_x()
.center_y()
.into()
}
}
|
